In which specimen were cells first identified?

microorganism

cork bark

DNA

mitochondrion

What is the function of the spinal cord? It connects the brain to the rest of the body. It stores information about the rest of the body. It connects the frontal and parietal lobes. It stores information about the spinal nerves.

4 functions of the connective tissue

Imagine that alien scientists are carrying out an experiment on Earth. They effectively construct a "shield" surrounding the planet that limits the amount of sunlight/UV radiation that reaches Earth's surface.

Suppose a gene has three exons, with 570 nucleotides in exon 1, 420 in exon 2, and 810 in exon 3. during a splicing event, exon 2 is accidently spliced out. what is the length of mature mrna from this gene?

Which factor is difficult to assess in a cost-benefit analysis A. product being used by everyone B. the aesthetic value of nature identifying internal costs D. categorizing internal and external costs

Match each step of the scientific method with its description

Several instances of irregular digestion are listed in the table below. Condition Description Symptoms Heartburn Inability of the muscles at the end of the esophagus to close Burning sensation in throat Peptic ulcers An open wound in the lining of

If nondisjunction occurs and an individual survives, which disorder can occur?

The three factors that can be defined as essential parts of one's overall health. A. physical, scientific, and mental and emotional B. mental and emotional, professional, and social C. social, mental and emotional, and physical D.

Features that increase the likelihood of survival and reproduction by an organism in a particular environment are called